As the heir and future head of this powerful and elite Mu family, he had no say in his marriage. This had been decided by the family elders long ago.
He could only agree and not disagree to the marriage arrangement. As for Mu Wanrou, he was not enticed to touch her at all.
Hence, when their engagement was approaching, riding along the convenience of a health checkup, unbeknown to everyone including herself, he spread a lie of her infertility.
Of course, the woman was healthy and could bear him a healthy baby any time.
What he did was bribe the specialists into telling her that she was infertile.
This was earth-shattering news to her.
This would mean that she was unable to continue the Mu family's legacy, and her 'Young Mistress Mu' would only be a mere title.
The Mu family had access to the most advanced medical facility; hence, despite being deeply dissatisfied, she did not question the diagnosis.